I checked your WS and it works for me. I tried it on Google Chrome and MS Edge. I sent you my answers.;-)
Liveworksheets.com
United States
12/5/2022
It is recommended to use an updated version of Chrome browser or Safari, although it might work in other web browsers
If you are using a mobile device or tablet, you might need to install the corresponding language.
This may vary in different devices, but in general you have to go to Settings > Language & input > Text to speech output > Install the language.
If you are using a Chromebook, please take into account that this device is not compatible with the voice synthesizer.
TeacherARG